According to the Bureau of Meteorology's Seasonal Climate Summary for South Australia, Spring 2009 was the wettest spring since 2005. When averaged across the South Australian agricultural areas as a whole, Spring 2009 has been the 25th driest since 1900.

Spring rainfall totals over South Australia were generally near average in the agricultural areas, tending above average across the pastoral areas. This was made up of generally above average rainfall in September, below average in October and generally well above average November rainfall after a dry first three weeks of the month.

Rainfall totals in the pastoral areas were very variable but generally ranging from 50 to 100mm. Erudina in the North East Pastoral district recorded 154.6mm as the highest reading in the pastoral districts. This was also the highest total spring rainfall recorded at this location since 1920. Totals in the agricultural areas were generally between 100 to 200mm, with totals widely exceeding 200mm about the Mount Lofty and Flinders Ranges, and several locations exceeding 300mm. Many of the western agricultural districts experienced totals in the 50 to 100mm range. Piccadilly in the Adelaide Hills recorded the highest rainfall total in the state this spring with 317.6mm.

The total water storage in Adelaide's reservoirs at the end of January 2010 was 68% of capacity; slightly lower than the level available in January 2009 (70%) but equal to that available in January 2008.

Following its completion at the end of 2009, the tap on the pipeline between the Glenelg Wastewater Treatment Plant and Adelaide's park lands was officially turned on in January 2010. The State government anticipates that recycled water accessed via the pipeline will replace billions of litres of drinking water previously used to irrigate the city’s parks and gardens and reduce pressure on Adelaide’s reservoirs and the River Murray.